02-Desktops - Spring 2008 CSE 265 System and Network...

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Unformatted text preview: Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison CSE 265: CSE 265: System and Network Administration System and Network Administration ● Who has sysadmin experience? ● Today – Managing (lots of) desktops ● Loading, updating, configuring – Managing servers ● Important to lots of people – Managing services ● Reasons for most servers Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Managing (lots of) Desktops Managing (lots of) Desktops ● Three main tasks for workstations – Initial loading of system software and applications – Updating system software and applications – Configuring network parameters ● Need to get all three right – Initial load must be consistent across machines – Updates must be quick – Network configuration best managed centrally ● Solution is automation (for supported platforms) Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Lots of desktops Lots of desktops You really don't want to install, configure, and update lots of machines individually. Pictures taken by Mark Miller (Lehigh LTS) in 2003 and 2004. Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Machine Life-Cycle Machine Life-Cycle Unknown Configured New Clean Off Build Initialize Retire Debug Entropy Rebuild Update Source: Evard, 1997 Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Machine Life Cycle Machine Life Cycle – There are five states and many transitions ● Need to plan for them – Computer is only usable in the configured state – Want to maximize useful time ● Minimize useless time ● Setup and recovery should be fast and efficient --> automation (manual processes are slow and error-prone) ● Slow (minimize) entropy – Restrict root privileges – Control where changes can and are made (e.g., 3 rd party apps) – Rebuilding & retiring may require moving data & apps Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Initial OS and App Installation Initial OS and App Installation – Automation solves many problems ● Saves time/money; reduces mistakes; ensures uniformity – Examples: Solaris JumpStart, RedHat KickStart, Windows AutoLoad, IRIS RoboInst – Cloning (ghosting, disk imaging) sometimes an option – Full automation much better than partial ● Eliminate prompts in installation scripts ● Can include automatically notifying people when complete – Partial automation better than none ● Needs to be well-documented for consistency Spring 2008 CSE 265: System and Network Administration ©2004-2008 Brian D. Davison Initial OS and App Installation Initial OS and App Installation – Automation solves many problems ● Saves time/money; reduces mistakes; ensures uniformity – Examples: Solaris JumpStart, RedHat KickStart, Windows AutoLoad, IRIS RoboInst – Cloning (ghosting, disk imaging) sometimes an option...
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  • Spring '08
  • DAVISON
  • Service level agreement, Uninterruptible power supply, Out-of-band management, Brian D. Davison, ©2004-2008 Brian D., Administration ©2004-2008 Brian

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02-Desktops - Spring 2008 CSE 265 System and Network...

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